52539619191 has 4 divisors (see below), whose sum is σ = 70052825592. Its totient is φ = 35026412792.

The previous prime is 52539619169. The next prime is 52539619193. The reversal of 52539619191 is 19191693525.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 52539619191 - 2⁷ = 52539619063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52539619193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8756603196 + ... + 8756603201.

It is an arithmetic number, because the mean of its divisors is an integer number (17513206398).

Almost surely, 2^52539619191 is an apocalyptic number.

52539619191 is a deficient number, since it is larger than the sum of its proper divisors (17513206401).

52539619191 is a wasteful number, since it uses less digits than its factorization.

52539619191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17513206400.

The product of its digits is 656100, while the sum is 51.

The spelling of 52539619191 in words is "fifty-two billion, five hundred thirty-nine million, six hundred nineteen thousand, one hundred ninety-one".